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POmerging list of lists
 

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    <blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/13808774/i-want-to-group-tuples-based-on-similar-attributes">I want to group tuples based on similar attributes</a> </p> </blockquote> <p>I am very new to Python and coding in general, have a list of cluster pairs like so </p> <pre><code>[[1,2],[3,4],[2,3],[4,5]......], </code></pre> <p>I have written this code to join the cluster pairs into list of larger clusters.</p> <pre><code>for i in range (len(Clist)): for j in range(i+1,len(Clist)): for disk in Clist[i]: if disk in Clist[j]: joined=joincluster(Clist[i], Clist[j]) Clist[i]=list(set(joined)) Clist[j]=[] break </code></pre> <p>I go on to take the empty ones out. However it doesn't join all the pairs up when i have more then 30 or so cluster pairs, some clusters that should have been joined have not been. I can't see where I'm going wrong? Can anybody me identify the problem?</p> <pre><code>[[0, 2], [0, 9], [1, 10], [2, 0], [2, 9], [3, 6], [3, 10], [3, 11], [4, 5], [4, 7], [4, 12], [4, 14], [5, 4], [5, 8], [5, 12], [5, 14], [6, 3], [6, 10], [6, 11], [7, 4], [7, 12], [8, 5], [8, 14], [9, 0], [9, 2], [9, 13], [10, 1], [10, 3], [10, 6], [10, 11], [11, 3], [11, 6], [11, 10], [12, 4], [12, 5], [12, 7], [13, 9], [14, 4], [14, 5], [14, 8]] </code></pre> <p>Sorry, problem only happens when i have a fairly large number of pairs. And this is what I get </p> <pre><code>[[0, 9, 2, 13], [11, 1, 10, 3, 6], [3, 6], [4, 5, 7, 8, 12, 14]] </code></pre> <p>so the 3,6 there should have been merged but it hasn't. </p>
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    1. COCould you add a sample input and output ?
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    2. COI have edited the above.
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    3. COHow exactly do you want to merge them? We need to see some logic behind your input and output, which clusters do you want to merge with which?
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